60648509 has 2 divisors, whose sum is σ = 60648510. Its totient is φ = 60648508.

The previous prime is 60648491. The next prime is 60648517. The reversal of 60648509 is 90584606.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45941284 + 14707225 = 6778^2 + 3835^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60648509 is a prime.

It is equal to p_3598373 and since 60648509 and 3598373 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60648559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30324254 + 30324255.

It is an arithmetic number, because the mean of its divisors is an integer number (30324255).

Almost surely, 2^60648509 is an apocalyptic number.

It is an amenable number.

60648509 is a deficient number, since it is larger than the sum of its proper divisors (1).

60648509 is an equidigital number, since it uses as much as digits as its factorization.

60648509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 60648509 is about 7787.7152618724. The cubic root of 60648509 is about 392.8921721587.

The spelling of 60648509 in words is "sixty million, six hundred forty-eight thousand, five hundred nine".